6 Write in, at or on.

Решение:

1. She goes shopping on Saturday mornings.
2. They start work at 8:30 in the morning.
3. Her birthday is on July 19th.
4. The children are doing their homework at the moment.
5. It's hot in the summer.
6. He usually stays at home in the evening.
7. John usually does his homework in the afternoon.
8. Mum and Dad go to the cinema on Sundays.
9. Dad usually works in the garden on Saturday afternoons.
10. Mum's birthday is on March 10th.

Ответ: on, in, on, at, in, in, in, on, on, on.